On a rainy Tuesday in late March, Maya sat hunched over two monitors, the glow of code reflecting in her glasses. She’d promised her little brother a retro gaming night—one that required an old Python script to run a custom launcher. The script, written years ago for Python 3.10.14, hadn’t been updated; every attempt to run it on the system’s newer Python versions produced cryptic errors. Maya knew the fix: install the exact interpreter version the script expected.